Fixes sampling rate reporting for 16K_mp3

NPSC.py

@@ -85,6 +85,7 @@ class Npsc(datasets.GeneratorBasedBuilder):
     ]
 
     def _info(self):
+        sampling_rate = 16_000 if self.config.name == "16K_mp3" else 48_000
         return datasets.DatasetInfo(
             description=_DESCRIPTION,
             features=datasets.Features(
@@ -101,7 +102,7 @@ class Npsc(datasets.GeneratorBasedBuilder):
                     "normsentence_text": datasets.Value("string"),
                     "transsentence_text": datasets.Value("string"),
                     "translated": datasets.Value("int32"),
-                    "audio": datasets.features.Audio(sampling_rate=48000),
+                    "audio": datasets.features.Audio(sampling_rate=sampling_rate),
 
                 }
             ),